The revamped SHIMANO ULTEGRA R8000 series crankset features lightweight crank arms, a hollow outer chainring and a wider pitch for more forgiveness on modern road frames. Available in 53-39, 52-36, 50-34 and 46-36T chainrings and crank arm lengths of 165, 170, 172.5 and 175mm.
-  Lightweight crank optimized for maximum efficiency in power transfer
-  Minimized weight without sacrificing stiffness
-  HOLLOWTECH II
-  Rider-tuned reports based on different combinations
-  FC redesigned for greater frame compatibility
-  The larger diameter chainring pitch increases the distance between the chain and the cogs, providing greater compatibility with frames with 135mm spacing and 410mm chainstay length